atomic number and mass number

Front

What is the charge of an electron?

Back

Negative charge.

Front

Define atomic number.

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the atomic number of Carbon (C)?

Back

6.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus of an atom.

Front

How do you calculate the mass number?

Back

Mass number = Number of protons + Number of neutrons.

Front

What is the atomic number of Oxygen (O)?

Back

8.

Front

What subatomic particle has no charge?

Back

Neutron.

Front

What is the mass number of an atom with 10 protons and 12 neutrons?

Back

22.

Front

How many neutrons are in an atom of the isotope Carbon-14?

Back

8 (14 - 6 protons = 8 neutrons).

Front

What is the atomic number of Sodium (Na)?

Back

11.